kernel/arch/ia64/include/interrupt.h

   1 /*
   2  * Copyright (C) 2005 Jakub Jermar
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * - Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  * - Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in the
  13  *   documentation and/or other materials provided with the distribution.
  14  * - The name of the author may not be used to endorse or promote products
  15  *   derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /** @addtogroup ia64interrupt
  30  * @{
  31  */
  32 /** @file
  33  */
  34
  35 #ifndef KERN_ia64_INTERRUPT_H_
  36 #define KERN_ia64_INTERRUPT_H_
  37
  38 #include <typedefs.h>
  39 #include <arch/types.h>
  40 #include <arch/register.h>
  41
  42 /** ia64 has 256 INRs. */
  43 #define INR_COUNT       256
  44
  45 /*
  46  * We need to keep this just to compile.
  47  * We might eventually move interrupt/ stuff
  48  * to genarch.
  49  */
  50 #define IVT_ITEMS       0
  51 #define IVT_FIRST       0
  52
  53 /** External Interrupt vectors. */
  54 #define INTERRUPT_TIMER         0
  55 #define INTERRUPT_SPURIOUS      15
  56
  57 /** General Exception codes. */
  58 #define GE_ILLEGALOP            0
  59 #define GE_PRIVOP               1
  60 #define GE_PRIVREG              2
  61 #define GE_RESREGFLD            3
  62 #define GE_DISBLDISTRAN         4
  63 #define GE_ILLEGALDEP           8
  64
  65 #define EOI     0               /**< The actual value doesn't matter. */
  66
  67 struct istate {
  68         __r128 f2;
  69         __r128 f3;
  70         __r128 f4;
  71         __r128 f5;
  72         __r128 f6;
  73         __r128 f7;
  74         __r128 f8;
  75         __r128 f9;
  76         __r128 f10;
  77         __r128 f11;
  78         __r128 f12;
  79         __r128 f13;
  80         __r128 f14;
  81         __r128 f15;
  82         __r128 f16;
  83         __r128 f17;
  84         __r128 f18;
  85         __r128 f19;
  86         __r128 f20;
  87         __r128 f21;
  88         __r128 f22;
  89         __r128 f23;
  90         __r128 f24;
  91         __r128 f25;
  92         __r128 f26;
  93         __r128 f27;
  94         __r128 f28;
  95         __r128 f29;
  96         __r128 f30;
  97         __r128 f31;
  98
  99         uintptr_t ar_bsp;
 100         uintptr_t ar_bspstore;
 101         uintptr_t ar_bspstore_new;
 102         uint64_t ar_rnat;
 103         uint64_t ar_ifs;
 104         uint64_t ar_pfs;
 105         uint64_t ar_rsc;
 106         uintptr_t cr_ifa;
 107         cr_isr_t cr_isr;
 108         uintptr_t cr_iipa;
 109         psr_t cr_ipsr;
 110         uintptr_t cr_iip;
 111         uint64_t pr;
 112         uintptr_t sp;
 113
 114         /*
 115          * The following variables are defined only for break_instruction handler.
 116          */
 117         uint64_t in0;
 118         uint64_t in1;
 119         uint64_t in2;
 120         uint64_t in3;
 121         uint64_t in4;
 122 };
 123
 124 static inline void istate_set_retaddr(istate_t *istate, uintptr_t retaddr)
 125 {
 126         istate->cr_iip = retaddr;
 127         istate->cr_ipsr.ri = 0;         /* return to instruction slot #0 */
 128 }
 129
 130 static inline unative_t istate_get_pc(istate_t *istate)
 131 {
 132         return istate->cr_iip;
 133 }
 134
 135 static inline int istate_from_uspace(istate_t *istate)
 136 {
 137         return (istate->cr_iip) < 0xe000000000000000ULL;
 138 }
 139
 140 extern void *ivt;
 141
 142 extern void general_exception(uint64_t vector, istate_t *istate);
 143 extern int break_instruction(uint64_t vector, istate_t *istate);
 144 extern void universal_handler(uint64_t vector, istate_t *istate);
 145 extern void nop_handler(uint64_t vector, istate_t *istate);
 146 extern void external_interrupt(uint64_t vector, istate_t *istate);
 147 extern void disabled_fp_register(uint64_t vector, istate_t *istate);
 148
 149 #endif
 150
 151 /** @}
 152  */